Bob had finally made it to the last round of the $50,000 Question. The night before the big question, he told the host MC that he desired a question on American History.

The big night arrived. Bob made his way onstage in front of the studio and TV audience. He had become the talk of the week. He was the best guest this show had ever seen. The MC stepped up to the mike.

"Bob, you have chosen American History as your final question. You know that if you correctly answer this question, you will walk away $50,000 dollars richer. Are you ready?"

Bob nodded with a cocky confidence - the crowd went wild. He hadn't missed a question all week.

"Bob, yours is a two-part question. As you know, you may answer either part first. As a rule, the second half of the question is always easier. Which part would you like to take a stab at first?"

Bob was becoming noticeably more nervous. He couldn't believe it, but he was uncertain; American History was his best subject, and he played it safe.

"I'll try the easier part first."

The MC nodded approvingly. "Here we go Bob. I will ask you the second half first, then the first half."

The audience grew silent with gross anticipation...

"Bob, here is your question: And in what year did it happen?"